document.onkeydown = function (e) {
  if (
    123 == e.keyCode ||
    (e.ctrlKey &&
      e.shiftKey &&
      (74 === e.keyCode || 73 === e.keyCode || 67 === e.keyCode)) ||
    (e.ctrlKey && 85 === e.keyCode)
  )
    return (
      btf.snackbarShow('就不让你打开控制台!'),
      (event.keyCode = 0),
      (event.returnValue = !1),
      !1
    )
}
